1969 plymouth road runner nostalgia musclecar coupe

Hey. U Wana trade that 4 a 95 mustAng gt conv? 5 sp

barn find in southern indiana,74000 original miles,has not been licensed since 1975,originally a green 383 auto,Ive changed it to a 4 speed,added a 3.91 gear,and am undecided on the 383 magnum,or a 440 that Ive got tucked away,any suggestions? I plan to paint it either b5 or b7 blue. thanks for looking!