Which is exactly what I've done, and for the same reason. RELIABILITY!
I spent a LOT on my last SR20VE disaster (in fact more than my ENTIRE new car), and HUUUGE mistake of an engine. Which WAS meant to be the 'all-killing-monster'; well it DID kill my bank balance, and consistantly under-achieve on the dyno, and road, which did kill my confidence, and was a gas guzzling monster. So it did kinda work... HAHAHHAHAH!
It was WAAAAAAAAAAY over-engineered, yet under-engineered, and used old World technology by people that really should have tried to keep me in the 20th Century; not plunging the extensive Nissan R&D back 25years into the pushrod era; as this engine builder did.
Hence I tried it from a different angle; shame it cost me SOOOO damn much to learn this.
Over here (in New Zealand) I NOW have the most powerfull N/A SR20VE, with around 140kW at the wheels, and a wide torque band; didn't take too much to acheive.
Started with a STANDARD SR20VE bottom end UNTOUCHED!
There are plenty of people over-complicating their builds here, and I was almost 20kW at the wheels more than most of these people.
One guy has even spent well over $ 10k, and two-years of build time with surprisingly, and upsettingly dissapointingly, average results.
I'll use his engine as a close reference as we both use the same gearbox, and ECU (Daughter Board), he may even have the same extractors(?); many of the others used the same ECU, but different gearboxes.
I suppose what I'm trying to say here is that I know what it's like to spend the $$$$, and do TOO much, with the results being below par.
If it's any help my old 'all-killing-monster' netted FOUR, yes, 4 more kW at the wheels, than the standard SR20VE engine did STOCK STANDARD internals and even SR20VE cams! Not EXACTLY what I was expecting...