They made a 200W output 2m amp also...I had one. KC2PX used to import MM stuff a lot (he had a huge stock) back in 1980-ish. I had a lot of it, and it was quite good. Hans VE3CRU used to modify the MMT144/28 2m modules for 135cm (222 MHz ham band here) and sell them as MMT220/28 transverters for just a few dollars more than the original. It took changing the L.O. crystals and about a dozen other components, but evidently he could do all this in less than an hour. I had one of those, also.