Small block in a PT cruiser

There was a Viper V10 powered one on e-bay a couple of months ago that was built for the SEMA show. My son wanted to go look at it but I told him if the things that scary in a Viper then I wouldnt want to be in a PT with it. It dont look real difficult to do a SB but I would still like to talk to someone with the experience so I know what to expect. I've only got $300 in the body so I dont care what I have to do to it to make it work. I got a welder and a chop saw so I'm sure I can do it.