I run O'Donnell plugs, so if you are going to use one of them, use the 99 with 30%. If you drop down to 20% use the 77. In the winter, you MAY get away with the 77 at 30%. If you try the 77 with 30%, I would inspect the plug every 2 tanks and look for the wire distorting. If you change the head button to a turbo button, use the O'Donnell 99t plug for up to 20% and use the 97t for OVER 20%.

On the pipe, the only pipe I can recommend (sp?) that is in the under $50 range is the OFNA X12. I would bet there is a good RD Logics pipe at that price point, but I haven't tried it or seen it run.

All of the pipes I run are the nova based pipes and I really like the Mugen pipe and the RB X12 pipe, but they are about $100.