To have been so far apart on the BEGi thing.. looks like we're on the same page.. LOL

Don't know how much the oil less system is .. but overall I'm thinking it could very well be worth it by the time you finish making room and running lines and pump and getting turbo setup to drip the oil (gravity feed) out properly.

And thoughts of muffler.. well not impressed with the BEGi solution and minimum was going to be restore tips, and thoughts of gutting the muffler were in the back of my mind!
Seems to have worked well for others under "stock" conditions... backpressure will be reduced, so I'd think it would be a feasable option.

Have you decided on an approach for tuning yet? With the other members that have attempted turbo and dead ended there I really think a thoroughly researched setup is the first place to start...?