Do i need to upgrade my front and rear suspension if i put a 392 hemi crate engine in my dodge dart?

stock torsion bars might need to be replaced with beefer aftermarket torsion bars cause big blocks are heavy and hemis are big blocks. the ford rear end will be fine but might need to add traction bars to support the leaf springs then the rear end wont start jerking on possibly burnouts or peel outs which may cause some serious damage in the future. the 392 hemi came out in the 50s and 426 hemi came out in the 60s but they do sell 392 hemi crate engines today which are very pricey as well as the 426 crates. i would recommend if using a automatic transmission get a 727 torqueflite cause it was the stronger of the 2 torqueflites i believe the 318 came with a 904 torqueflite and it will not take the power of a BB if you want a manual i suggest finding a A-833 4 speed which came behind hemis. it will be a moderate swap but i wont say it will be easy or it wont be hard it depends on the steps you take. you will need motor mounts and big block radiator, but the engine will fit in the dart's engine bay just fine but will be a tight fit but if adding headers you might need to hack up the inner fenders to clear them. in 1968 dodge darts was equipped with 426 hemis and werent street legal back them but now are they were only built for drag racing. They had to cut up the inner fenders to put headers on the hemi as well as the gts version of the 440. oh you need to do some re wiring also