There's a bloke on the other forum with a 997.1 Turbo by 9e. Although they're not for me, he likes the VMAX events:
"I always run circa 20-30 back to back 0-200mph-0 runs with a break for lunch in between. Will be attending 4 VMAX events this year so she'll do over one hundred 0-200-0 run again this year all on a completely stock engine and gearbox - incredibly rugged cars. No substitute for Porsche/9e we just turn up drive, beat most things this side of £300k and then drive home. Totally plug and play ."
I wish this were true of the R53 and my NA 9972: I'm trailering it to my indy today as there's an issue - the engine will start and run but if you rev it, it just stalls which makes it undrivable. I currently suspect it is the HPFP (the one already replaced under warranty before my time). hey ho.
In retrospect, you might not go too far wrong with a Mezger engined car, a 3.6 twin turbo 6MT maybe...