are you crazy?first off you wanna put a chevy engine in a ford,then you slam the 2.3?youd be better off building the 2.3 and turboing it!!call up summit racing,they have 2.3 turbo rebuild kits with forged pistons,rings,all seals and gaskets you need for about $430.if you were to buy the 302 to put in it,youd have to change too much stuff to make it work....springs,
tranny,rear end,etc....with the 2.3,if you run a turbo,youll have to purchase a turbo manifold,ecu,turbo,or you can just buy a whole efi engine from a turbo car(svo mustang,merc capri gt,thunderbird t-coupe,ranger turbo,broncoII turbo,or cougar turbo).then hook up the ecu and wiring harness and BLAM,turbo 77 mustang!if you dont wanna go the turbo route,look up
www.racerwalsh.com ,
www.summitracing.com ,or
www.esslingerengineering.com for the 2.3L n/a go fast goodies,or go to your local dirt track and ask around the guys running 2.3L how they built theirs.the only reason i suggested this is because it sounds like you may be on a tight budget.
nate