Red Top Custom Exhaust Manifold [Archive] - Toyota MR2 Message Board

header, flange, diameter, 3sge, beams, super, bpipe, piping, hole, fujitsubo, manifold, custom, exhaust, compared, ej20, fa20, locally, loss, stock, small, weight, aftermarket, 12lb, cylinder, outer, 60.5mm, flanges, larger, 57mm, transition, line, ports/runner, type, thinking, stainless, wrote, member, 5sfe, welded, ebay, engineering, xcessive, half, quoted, cost, weld, runner, foot, manufacturing, motorsports

Looking to see if anyone has ventured into custom exhaust manifolds 4-1