I just picked up a 99 spec undertray today. My car never had an under tray since I bought my car but I've never had an overheating problem.

I know the front of the tray normally bolts at the lip of the original bumper, but with a C-West front do I simply just make some holes into the bumper and bolt it on?

I'm also running a Blitz FMIC and radiator is at an angle so not vertical.

 

I would think the primary purpose of the undertray is to keep road rocks and such from damaging the radiator.

 

the undertray also directs air up to the radiator.

 

+1^

and yes you have to drill holes in the front clip to mount it up.

 

Cheers guys. I'll be eager to see what the water temperature will be like after I have this installed.

 

Shine makes a nice undertray for the FD that works well with aftermarket bumpers. Might want to check that out.

 

id sell the 99 tray and hack up a 93 one to fit under. zip ties are your friend.

 

Believe me I'd hack away at a 93 one if I had one but I don't. I counted 14 holes on the undertray (6 at the front, 4 in the middle and 4 in the rear). Now which of these would you recommend I zip tie?

I can see undoing all 14 bolts to get the tray off being a real burden in future if I wanted to work on the car.