If you have some money to spend on the LPG setup, live in melbourne and want over 130rwkw give the guys @ LP GAS 1 a call, they are in Lilydale Vic and have a setup involving a later model EFI manifold which makes a Ton of power. I am switching over to straight LPG on my 6 but i'm really not interested in spending any more than I have to, i need to focus my funds on the 351!
I'm going to keep the redline manifold and chuck on an impco 425 straight LPG carby with a 1" spacer and a 600 holley base. I'm also getting a custom wade cam and new lifters. While the engine is out i'll also put a bigger oil pan with windage tray, crank scraper, etc on it. I'm hoping for 160-170HP but more importantly I want to hit 15.30 down the strip. Ran 15.63 @ 87mph at calder tonight, but there is not much more left in the current setup (possibly a bit left in the driver however