How much did it cost to cost to swap in your hemi?

BTW, you can buy the ring in stainless or aluminum here. Saves having to track down a GTO tank to cut it out of.

And here is a kit from the same place. Permanently sold out though. Info only.

Here is an interesting animation of how the suction pump works.



Finally found the article I was looking for:

https://www.vaporworx.com/resources/fds/6-fuel-modules/