Help with intake manifold for Big Block

I have a 454 crusader with a serial number of 94948. After a little research I found out that it is a 1994. It has a rochester quadrajet carb. This season I noticed that it has a small exhaust leak from what appears to be from the section which warms the choke. I have been trying to locate a new intake and don't know if it has the oval ports of rectangular ones until I take them off. From what I am reading I most likely have the oval ports. Does anyone have any suggestions as to which ones I have and where is the best place to purchase a new one, used one, or should I just get the one I have welded??? The casting number on the intake is 333841.

Thanks

You might want to read this thread...info here, especially about gaskets and replacement parts.

http://www.thehulltruth.com/boating-forum/279541-454-intake-manifolds.html

Good luck

here's a freebie:

http://www.nastyz28.com/forum/showthread.php?t=199985

You have the 'standard' production low-rise oval port manifold. The heads should have the peanut ports which will be smaller than those in the intake.

I'd look for a used one before getting a new one, because of cost -effectiveness. There's no real benefit to changing to a different style unless you redo the bulk of what lives under it.