Original setup was a set of pro-ported GT40 irons w/lockwire gaskets topped with a TFS-R with a phenolic spacer and a 75mm TB. Cam was a TFS Stage 1 w/Crane 1.7 ratio rockers and the heads had Crane beehive springs. I used the FMS adjustable timing set. Made 270 to the tires pig rich (10:1 AF) with 30's in it, swapped them out for 24's which brought the AF up to ~12:1, which should have bumped it up to closer to 300, but never had it back on the rollers to confirm, so that's just speculation on my part based on how much harder it pulled with the 24's, and feedback from the guy that owned the tuning shop who told me I'd pick up at least 20HP with the right A/F.
I later bought a Camshaft Innovation custom cam and K-Motion K800's along with some hardened 1-piece pushrods to go with it. Goal was to make 325 to the tires N/A. Then I wrote the car off, kept the engine, and worked on putting it in an '82 Capri Black Magic roller I picked up. I was a little too ambitious, was going to swap in full aero interior and keep it fuel injected. Picked up an entire 2001 Cobra IRS setup for it.
Then, talking to Jay Allen, he said I'd make more power with a carb, so I sold the TFS, bought a Weiand XCelerator, Holley HP750, non-TFI dizzy, Crane HI-6 ignition and then bought my E39 M5 and the car just sat. Eventually I parted the car out and sold the engine to a guy who kept everything except the stock bottom-end, as he turned it into a 347. I had used all ARP hardware, had ARP head studs, intake studs, carb studs...etc.
I haven't looked at any of the newer Windsor stuff TBH, I had three kids and got out of the scene when I bought the bimmer. However, I may pick one up and build another one at some point, as I very fondly remember the fun I had with that car.