boost and bass

Current setup - D15bjdm Stock motor, Garrett t-25 7psi ,450cc inj., y8 intake manifold, b18 60mm thottle Body, fuel pump and fpr, full 2.5 exaust

Setup runs pretty good but the motor has a leaky rear main and the clutch is starting to weaken. so I figure with all the parts I have i could build a pretty good motor and sell the d15b since it runs good.

Parts I have- Full d16z6 motor block old and tired, head recently rebuilt, full d16y7 motor original motor in my car has 170xxx but is very clean and runs very very well. d16y8 head, d16 arp headstuds, d16 arp rodbolts, d15bjdm tranny, and d16y7 tranny

My plan is to take the z6head and y7block give the oil pump a good porting and shimming, put the ARP's top and bottom get all fresh gaskets and seals with a new clutch and possibly a lightweigt flywheel. usingcompression calculators it says this will give about 9.6:1 should I use this setup and put it to 10-12 psi? what tranny should i use the shorter jdm, or the longer dx? I beleive the z6 pistons have lower compresion shouldi use those ?

Any experiance or feedback is welcome