I have a Professional Products intake for my SBC. it's not bolted up yet, but it sure is built with quality in mind.

pro comp=junk...professional products=decent no connection between the two

I have the professional products single plane. No complaints.

I haven't used any of the pro products stuff in a while...the early stuff were mostly rip offs of name brand designs and seemed to be a little less quality aluminium than name brand, performed well though. Biggest complaint was lack of thread inserts. The threads were just tapped into the casting. If they have gotten better since they first came around then prolly a good deal for a budget build.

I ran a pro products intake on a 302 I built and had zero issues on the fit or finish. Mine had been ported/polished by the guy I got it from and worked really well. That 302 beat up on a bunch of "fast" cars.