Just picked up an accel lower base the cast large tube runners, 58mm lingenfelter tb, howell maf harness, modified maf ,ported gm plenum + sensors tpis regulator etc today from a guy on craigslist all this stuff is new except for the maf and plenum. The question i have is there seems to be alot of controversy about the lower base how can i tell who made it and will it perform well on a ZZ4. All the parts are loosely assembled so i'll have to get the part number tomorrow any help appreciated. ps if anyone is interested in the harness it may be for sale.