Rms alterkation track width?

young gun met you on the way out of the show sunday. have bills front and rear set up on my challenger ,cars handling is awesome and I run it hard however front is wider and in reverse with wheel turned tire hits fender. my 69 dart has bills rear but just ordered hemi dennys front for exactly that reason narrower, also running tti headers and dont want any problems. drive em like you stole em. nw dart.