I'm thinking of getting a set of these headers for my '88 ECSB 350 engine. I realize they are most likely Chinese made hence the cheap price, but they do look well made and supposed to be a drop in replacement for the stock manifolds. https://www.amazon.com/gp/product/B...1-0e6c-4207-b08b-cc9492e60b0f&pf_rd_i=desktop Also I plan to fab a Y-pipe with dual 2 1/2 cats into a flowmaster Y connector then into the 3" system already there. The future plan is to swap in a Vortec 350 long block with a TBI intake. My question is has anyone had any experience with these Headers?