I don't know if it'll work, but the 3000GT VR4 DOHC 24V twin turbo heads might fit. The non-turbo motors are pretty lame and torque is too high up on the curve, but the boosted engines make ~ 315 ft/lbs of torque at 2500rpms/300HP at 6000rpm so there might be a big difference in the cam profiles:

300GT Specs

I have no idea how they would do without the turbos or if they would even fit our block, but it would make an interesting experiment - and if they fit and worked ok, the addition of a blower would make it even more interesting.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum