don't limit yourself on the L24 block. years ago i did the popular and easy swap of the 81 ZX L28/5-sp/3.9 diff into my 71 240Z. with Mikuni 44s and Tokico Illuminas at all fours it's all grins. here's a sample of going easy through the gears on the Big Island after an exhaust upgrade - <a href="http://www.zcar.com/forums/read.php?f=1&i=413551&t=413551">MSA's Dynomax Driveby</a> here's a few links...hope it helps <a href="http://www.zcar.com/forums/read.php?f=1&i=405265&t=405245">links to 240Z history, restoration and sellers</a> shoot me an email. i'll be visiting Honolulu and my ol' stomping grounds next month.
Our 75 and 71