Hey Jurva,
Interesting build you have here. I am guessing from the first pick of the old Torana that you are an Aussie. If you are, you need to find someone with old copies of the magazine Street Machine - I'm talking very late 80's to early 90's. In those mags you will find a guy, I think from Queensland, who put a blown 351 into a MkII Escort - just like you are doing. And somehow it was street legal! If I remember rightly the guy rebuilt it a couple of times, so it was in a few issues over the years. It was also in a few of the 'Hot Fords' special magazines published by Street Machine.
Cheers,
Pots.