After a lot of thinking i've decided to go A15 again.[rotary-no to expensive,hayabusa-no cos the diff and dangers of rolling back in a spin,SR20 has the power but space is limited,ka24-lots of changes and money etc etc.I struggled to get an A15 here and then after a lot of reading i realised why they were so scarce.The new guys were using them,stock car racers,4x4 community--damn well nearly everybody [was reading about A15 on all the sites] I suppose this is why nobody has an A15 [importers] and the price is way out.When i got the first motor it was R5k- R6k and now they going for about R9k--R10k.I was not sure if it was an A15 cos the guy that has the motor did not know what to look for.Anyway took a cloth and wiped it clean and Bobs your uncle it's an A15 AND at only R5.5k --so tomorrow i'll collect it. So this what i'm thinking --Turbo --now after reading a few old posts [max hp turbo] i see some guys say 200hp and up is not possible [I got 130hp NA on base map] I'll be happy with 200--240 cos the little jeep could make between 500 and 600hp [cocolizo] i'm sure i could get 200--240. NOW if i use the 1500 head and not the GX head is it going to make a big diff, 2nd what diff will it make if i took the ex/turbo mani forward instead of down next to the shock absorber panel,3rd are the 4age t/bodies a good bet.I know power is made in the head but will appreciate any input --cams,valves,good turbo pistons,nice size turbo,ecu type etc Oops forgot A12 or A15 flywheel -- the lightest