Well i think the reasons for the engine going kaboom are linked to:

untuned 20psi, loosing oil, driving when the temps are hitting high levels and hammering it on a cruise... But we all make mistakes and if you learnt something from it, then all is not lost

MMS should be able to supply / fit the sti block and sort everything out for you. Internals will be stronger, you can handle more power and it offers best BFYB really.