Since I turboed my SOHC, let me give you some input.
I ran my SOHC on Precision GT32 Turbo with the JGS manifold, first of all Brian is correct the SOHC does suffer from not having oil squirter's, but to kind of counter that I installed an oil cooler which made a world of a difference on my oil temps.
I ran 8psi all day long and was haulin ***.
As for tuning, I took my old ECU put in a ZIF socket and made my own rom tunes which come to find out was a lot easier then I ever figured out.
All in all the SOHC loved boosted ran with out any problems and the fact that its 9.1:1 compression ratio helped out a lot. I think up to the point where I ran my car into a wall cause of a stupid BMW driver.
The car hasn't really generated any problems for me.
Only reason I really stayed with the SOHC also is cause it was already there and it was just that much easier to boost.
But like everyone said being in Europe and all it might be a pain to source parts for it. I think stickin a something like RB or SR in there might be a really good choice.
But if you decide to stick with the SOHC and have any questions or need help sourcing and parts. Feel free to email me at
[email protected] or drop me a message on AIM@ pijaczek18.