What's up everyone, I'm thinking of boosting my SR20DE (NA) that sits in my 1992 (PS13) Silvia Q. My main concern is are NA blocks the same as turbo blocks? I am aware of the oil and coolant holes that have to be drilled and tapped. Is this the only difference? I'm taking the block to a machine shop to drill/tap the holes and rebore to 86.5mm and I'm going to be installing aftermarket 86.5mm pistons, rods, bearings, all that. Internals will be completely swapped out and bottom end will be fully rebuilt. I plan on using the same heads, not sure if that will work ok. Any advice or info would be great, thanks! I also have the option to buy a bare block from a red top but if I can do it this way I'd rather save a couple hundred bucks.

Parts list so far:

P2M front cover oil pump assembly
Z32 air intake filter kit
Z32 MAF
Greddy oil pan kit
CP Carrillo forged pistons and rings
Eagle Spec H-beam rods
Clevite main and rod bearings with thrust washers
Tomei metal head gasket
Arp head studs
Valve cover gasket
Garrett GT2871R-RS turbo
ISR bottom mount turbo manifold
ISR turbo lines
Clocking adapter and wastegate rod extension
GT fitting and drain kit
Oil restrictor for Garrett ball bearing turbos
ISR 7 layer exhaust manifold gasket
ISR 4 bolt turbine inlet gasket
ISR front mount intercooler kit
Koyo radiator
Greddy type FV BOV
GKTECH rocker arm stoppers
P2M thermal intake manifold gasket
ISR downpipe
ISR 3 inch blast pipe exhaust
255 walboro fuel pump kit, includes Z32 filter
ISR water pump kit (radiator hoses and thermostat included)