It's going to be pretty tight around the blower plenum and the rear exhaust port may be behind the firewall a little. Gaerte Racing Engines are building the engine and they are in touch with GP for specs. With the serpentine balancer, oil pump drive and blower pulley I need 7" in front of the crank snout. The 292 is 3" longer than the 235 I think. Also my radiator is almost 8" thick with the electric fan. I can move it forward a little. I had a mid-shift kit put on the TKO 600. I will be mocking up next week. Hope I don't end up with a COE.
