1998 Class A - Chevy chassis and 454 - yay or nay?

They were ment to be potato chip delivery trucks not fifteen foot extensions welded on to make a rv. I did everything to mine over the years I had it... Henderson bell cranks,springs,tear trac bar,larger ipd front sway bar with poly bushings in front and rear,idler arm,relay rod,steering dampener,steer safe,inner and outer tie rods,Koni shocks all around,Goodyear tires then Hankook tires. It's been a few years and probably missed something but after all this it was still a POS.