I needed a custom set for my LS1 project since I had to relocate my coil packs due to tight spaces. I had a local race shop make them up for me from an MSD 8mm universal kit. They had to order the coil ends but they had them back to me in 24hrs for less than $160. I thought this was quite reasonable. And they guarantee there work.
If you need a set try your local race shop guys. Plus they love looking at swapped stuff and have a lot of knowledge we don't.

 

I had a set custom made , msd with high temp boots for 90$ shipped. Look on eBay.