I must not of read the thread right the other day , i thought you wanted the 88 kit with the stock head .
the 88limited (stock head) kits double the power over stock .
Now the v2 heads for the 50's are a brand new item so not much testing from what i have seen (not that ive been looking)
but they are suppose to be comparable to the Taky heads for the crf50's
(like the v2 heads for klx's are similar in performance to the taky +r heads)
So if there anything like the taky heads , then they will crap all over the tb race heads , and annihilate the stock head 88 kits. ( and will make alot more then double the standard 50cc engine)