You bought it because you *thought you could get an ls1 into it I bet. Problem is you are a 19 year old failure. If you did something besides knob gobble people on an internet forum you might not be such a bitch.
Hal by fittings do you mean the gaskets or flanges? Neither? I think those are 38mm if I am correct I may not be. I'm pretty sure on a 35r those extra holes would be water inlet/outlets.