Im personally building a 360+727.. i changed my 7.25 a LONG time ago.. didnt want need or think i wanted the exspence when i finnally drop my 360 in and find out it wont handle.. 7.25's came behind S6's and some V8's most likely 273 and 318's even a stock 360 is way too much for a weeny 7.25
i suggest you trade it out for a larger rear.. your best option is a 8.75, but try to find one! your best option is a 8.25 like i have and make it right for you.
im going to run a set of 3.55 posi
mild 360+2300 stall 727
and to answer your question. NO it wont hold up. and i say that with your wallet in mind. because if your going to take out your stock motor which isnt going to be a 360 and thro a 360 in because its bigger, i bet your going to drive it harder and hense.. you need a stronger rear to keep up!
its like dropping a Big Block in a abody.. you have to change the brakes to accomdate the added weight let alone the HP! :headbang:
Cerwin