alright, I need a new motor to get me through the last of the season, and I really dont want to spend $400 for 5 more races...I have never had a GO, but have raced against them and while they had good power (5ports), I have seen a lot of experienced racers have issues tuning them...so what is the deal with the new GO's???? I run a STRR on medium size tracks with lots of short run ups to doubles, etc that require good power coming out of corners. I currently have Dyn 53 and 86 pipes, JP2, MSR1005, and OS T2050...should I be looking at the 3 port or 5 port or the 25? Not real crazy about the 25 as it is a standard plug....also, I am confused by the long and short LSN....what is coming with the new models now? If I do get one, should I just slap a Nova carb on it? (I have several lying around). I really do not want to have to buy a mill and then have to JB weld things on it...if that is the case, I will just spend the extra money, race it and call it good. Thanks for any help!