Another dumb question, exhaust flanges

[oteixeira]

OK,

I love this site because I know someone out there probably knows this. I have a perfectly good 2 1/4 inch exhaust system that I want to use with my 05 Silverado 5.3 motor. I am using the stock exhaust manifolds, and while the pipe seems like it will fit, the flanges on the exhaust side are too small. The flanges I have are 3" between each hole (triangle pattern) and a 2 1/4 inch pass through for the pipe. The truck has 4" between the bolts (traingle pattern as well). Does anyone make a flange that will work for me??

Orlando