Big Block Conversion, do it again?

dropping a big block of any size is a bolt in affair these days. you can do it with zero fab work these days. they sell off the shelf headers that will fit/clear/ work with nearly every combo you can think of. I hear about the cost of headers all the time. TTI headers are expensive no matter what engine they fit. you can get schumacker headers for $575 now. you can go the cheap route and use hp b-body manifolds even. then i hear about weight problems. well an aluminum water pump/housing and intake take you near the same weight of a stock iron small block. the big problem as i see it is the handling. these cars handle like shopping carts right off the show room floor. age then 40+ years and drop any motor in there and its going to be a sloppy pig. everyone of these cars needs a front end re-build and stiffer tortion bars no matter what you intend to power it with. then i hear the crying about brakes. anything more then flintstone power needs a disc brake upgrade. hell even your 300k mile slant six running on 2 cylinders can gather enough steam to make a panic stop with factory drums a pants soiling experience. its all about what you got and what you want. any engine can be built to perform to a desired goal. i just think its all about personal preference.