Do you know what caliper model the Reyland kit supplies?
AP Racing provide a wheel clearance template on their site for the MK5 6 pot kit, in the downloads tab - https://www.apracing.com/product_details/performance_upgrades/factory_big_brake_kits/vw/golf_mk5/mk6_and_scirocco_mk3-gti/tdi-front_6_piston_kit_cp5570-1015.aspx
I feel your pain. I did this some years ago on a Corrado with an AP 330mm kit, which was quite a faff to fit. A change of wheels and ball joint grinding was required.
Since that experience, I now prefer to make parts fit the car rather than making the car fit the parts, so I opted for the 340mm Clubsport S setup instead of 4-6 pot kits.
Probably not the same level of repeatability and fade resistance as your DB9 setup, but it works well enough on the road. I reckon the CS S discs could stand up to track work, but you'd probably need some stickier pads. This setup fits behind Pesceras with room to spare. No spacers required
Cheers mate thanks for that very handy link I think I will be doing some measurements and contacting AP about the CP9200 calipers (as advertised on reyland site).
Lol I had a couple of low corrados myself back in the day...loved they cars would have another one ..and yeah some of the things you did back then to get the car how u wanted it looking/sounding was wild thinking back lol
To be fair I would have been more than happy with the CS S setup you have as have read good things and your defo right what your saying I hate having to modify the setup to such a degree just because of the brakes..cannot stand spacers, never have...again my fault tho. Maybe will only do 3 track days a year at knockhill but it does pound your brakes around there.
On a side note the brakes are immense both in terms of performance and looks (do not like the Aston logo tho bit cheesy for me tbh)...again not tracked them yet tho.
The wheel clearance is dependant on the disc offset among other things, but this technical drawing might help you determine the clearance of the CP9200 -
https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiEku20xsTbAhWFOcAKHZ45AMkQFggoMAA&url=https%3A%2F%2Fwww.apracing.com%2Fproduct_details%2Fperformance_upgrades%2Froad_and_aftermarket_brake_calipers%2F4_piston_calipers%2Fcp9200-forged_front-152mm_mounting_ctrs.aspx&usg=AOvVaw0TiUicd_UlARwYHFsm6Wh5It's very similar to the CP5200 I ran on the Corrado, which isn't a massive caliper, so you might be in luck
My Corrado was a bit of a beast because it had a Garret GT35R turbo strapped to it, so it needed some brakes! The CP5200 on 330mm AP groove discs with Pagid RS15 pads was sublime. Really, really nice setup
I got 60K out of the AP discs, worn way past their wear limit and still didn't fade or warp!
The only reason I got rid of the Corrado was because I just couldn't get any parts for it! Either obsolete or on 1 - 6 month back order!
I learned a lot on that car, especially with spacers, wheel weights and offsets, scrub radius and roll centres. In short, the factory get all of that right, so I've since avoided going too low and absolutely avoided spacers!
The CS S setup has some nice usable stopping power and I didn't really notice the increased weight. When you already have silly heavy 12Kg Pesceras, a bit extra in brake weight makes no odds really
I bet they are! They look the bizz with the J hook discs
Shame they don't fit without spacers!