I really like cletis' answer wink
drive this for a while first
there is not much in the re-sale market after you spend thousands on her. old trucks are alabor of love. they are not 32 fords.
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Should I use the old frame or buy a new one?
there is nothing wrong w/ this frame. since you want a mod, then mod the frame. if you need to box portions add an IFS or 4 link you can
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What is the cost effectivness of buying a new frame with new mustang II suspension as opposed to using the old frame and having a suspension proffesionally added?
a new good frame might cost you $5K PLUS, w/ blasting, an IFS, and paint.... etc.
them again depending on who welds a new clip or IFS on might cost the same. that all depends on you.

there are SO MANY FACTORS involved in what you may want vs. can afford eek
drive her first
then ask questions
this AIN'T going to happen overnight or in a month. :blat:
then consider a frame swap w/ an S10 b4 you go out and buy a whole new frame/
http://www.ad-engineering.com/

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
Every Shaver | Now Can Snore | Six More Minutes | Than Before ... | Half A Pound for Half a Dollar | Spread On Thin | Above the Collar || BURMA-SHAVE