for manifolds
http://store.summitracing.com/partde...5&autoview=sku
for headers
http://store.summitracing.com/partde...5&autoview=sku
they're only 2 1/4", but for anything smaller than a healthy 383 they'll do just fine. they're 100% mandrel bent (NOT what your local exhaust shop will do) and fit great.