Thanks all, I looking real hard at the Aitronics Tx and Rx. Looks great for the money and has expo to boot! I could swing a super tigre G 51 and the Airtronics RDS 8000. Like the RDS 8000 better than the JR spectrums. But as has been stated, will carefully decide on the radio. I would certainly like the 55 AX, but for the money the G51 should do well. Will need to re-cut the cowl for the high end screw though. but would have to do the same for the 55 AX, The high mix screw appears to be longer than the AX as well. Perhaps eliminating the need for an extention.