Barry,
Usually can't go wrong with a Biondo T/S. I've had one on my car for many of years and they are very helpful in support in case you have questions. You also have Bob Phillips over at ACD who sells a very good product. Both Biondo and Phillips are .90 Racers so they understand the logics of that type of racing.
If you have any questions about MASGA, you can alsways e-mail me at
Rekeister@aol.com.
Rob Keister
MASCA/MASSA president