the lsx swaps are popular, there are issues with oil pan and headers. If you run a bolt on clip from tci or something of that nature you will gain lots of clearence and headers are easy to find. Then you will be able to us popular fbody oil pans. lsx engines in stock clips and steering with mechanical clutches will need holden oil pan and custom headers both can be pricey. I am doing this swap on my 62 post car. Are you running a hydraulic clutch?