[stangerlx]

i have a 1990 mustang lx and it hase a pinch weld . i need to know how to strengthen it to hlod up to a 351 windsornot stock . how would i do that any guesses

[Nicks79]

Pinch weld where? Frame? Firewall?

[stangerlx]

the frame is pinch welded no need for fire wall mods

[1fast50]

the number one thing you need is a set of sub frame connectors and weld up the rear torque boxes before you put any major power to the foxbodys, the sub frame connectors will help take the flex out of the chasis and the torque boxes are just spot welded in the car and are prone to tearing. this is a good place to start.