I just bought an 88 LX convertible with a full gt kit and a 2.3l. i also bought a 351 (block #d1ae-6015-da9). where can i order the cheapest swap headers and oil pan? And is my block a windsor or a cleveland or is it a modified or 400? I've checked 100's of sites with 100 different answers. please help asap because I'm ready.