A few things concern me. My apologies if I sound down on it, but I'm a firm believer in reality and I think you are being sold a bill of goods here.
I do not believe the heads will be anywhere near what is claimed. Factory non-max wedge heads, even pro ported, dont reach 350. There's not enough intake port, intake manifold, or cam to make anywhere near that number. Assuming the heads are above average porting quality they might make 290/300. Average being about 20cfm less. The intake choice is poor IMO, same with the stacking of 4500/4150 adaptor and spacer. All that plenum and there's no port in that intake. B wedge intakes are harder to come by, but it should have either the Indy with an open, or M1 with the adaptor on it to make some real numbers.
The front bars were done "lazy". The purpose of those bars is to trasfer energy from a frontal crash to the cage. I'm assuming the cage is going in but it's not visible in the pics. The reason I think there's a problem is the angle they are on... That will not transfer energy properly. Normally these bars approach the cowl perpendicular to it. Then eitehr pass through and go to the cage, or are plated as you see and the interior has similar plates and the bar comes straight back. I think as it sits, you have set yourself u pfor cowl cracking issues if you don't ever hit anything, and god forbid you do, that bar will just punch through the cowl cap and the front end can fold up.
Lastly, the strap being used as an engine plate... Not anywhere near strong enough. The reason plates (even stel ones) are wider is so they don't twist. Steel elephant ears are cheap....
Looks like some serious hardware there. I'd hate to see something happen or you get set up for eventual trouble.