Wow Brett did I read that right, 42*????
I never dyno'd the old 468 setup but it was enough to equate to 580rwhp with 26*, 191s, 5x16s, 5k cds springs, 887 215 pump stock rack plug no plate afc mods going off the 12.07 at 110.6 at 6250lbs. Made more power with the addition of a rack plug but blew the head gasket the weekend I was going to race it. 468 had an 83/74 turbine in a .90 t4 housing.
Again going off of e.t. calculator at 6490lbs (added 35" tires on new wheels) 12.46 @ 108.6 I'm around 550rwhp when I ran this year with: 911 180 pump benched by DPE, all afc mods, 5k cds springs, 5x13s with around .055" total lift work (.035 pintle, .020 lift collar IIRC), 24* (at that time, at 27-28* now), number 6ish custom plate I made half way back (zero plate now, my try six again), and competition delivery valves cut by Weston (same as SDX pieces). This was on a s364 with a t4 .91 housing with a 71mm turbine wheel.