If you wanna turbo a motor I would get an LS/VTEC and swap the pistons, and rods and there you go. Slap on a Ls tranny if you like the long gears and slight lag from turbo. Or you can get a GSR tranny which will give you the best of both words and you will have mid gear ratio.
If you plan on going N/A I would also get LS/VTEC but get some High comprestion pistons and some beefy rods and you'll be good then get either the pricey Type R tranny they have the shortest gears ever which is good for n/a setups. and they have LSD. Or you can just get a B16 tranny which is basicaly a type r tranny without the lsd. Ehhh goodluck.
LS/VTEC for n/a setup I would get and not touch it after that till Im ready to dump crazy cash would be what I am doing now.
Type R head with b16 cams
Ls block
B16 pistons
GSR oil pump
GSR water pump
GSR tranny
ACT 6puck no springs clutch.
And your good to go.