The one and only Bug I've built was a turbo set up. I used a turbo from a Subaru and adapted a stand alone system for the ignition and fuel. It wasn't intercooled for simplicity, but I ran E85 and E100 with tunes for each. Latent heat of vaporization from the E85 and E100 provided the cooling. I wanted to run meth, but the owner didn't want the fuel system maintenance.. Fugger still made 325HP to the ground. It was a fuggin handful to say the least. The owner still beats on it and it's been almost 10yrs.