I found this on ebay. RFX 75 Replacement RF Power stage. I was wondering if anyone has used one before. On youtube video it showed a stock 29 with one installed doing 7.5watts dk and swinging to 130 watts. But didnt know if this was actual gains or hoax. It says can be put on cobra 25s, but doesnt say about 66 or 68s, but shouldnt it be the same install? Thanks to anyone that can help