a boosted phazer can make 160hp (boondockers kit) and with a longer track like a 153x2.5 cut down 14.5 wide they can give big bores a run for there money. cause ya gotta remember, at elevation a boost phazer will still make 160hp, a n/a 2 stroke will not (3% hp loss per 1000ft). i;ve seen tphazers show 900 cats how its done.
I too haven;t heard of issues of these not liking boost or other problems, yes they won;t take 200hp or more cause it will blow up the block, gotta remember these are half the size of the 4 banger and the engine was built with weight in mind. i've heard of a few t-phazers burn down but there have been few with every other turbo sled also.
dimebag- i used to have an 07 phazer before i went to my apex, If someone like one stop or hurricane performance made a high hp block for the phazer and i could boost one uo to 250hp i'd be back on one in a heartbeat before a 350hp apex or nytro. IMO super fun sled to ride just don;t got the jam and for most people its not cost effective when u can buy an 800 with nearly equal performance for less