Are you speaking of OBS trucks or Super Duties?

OBS Powerstrokes are single shot injectors, noisy, smaller trucks overall, weak auto transmission. Good manuals. Good overall truck.

Early Super Duty's have an inferior turbo, resolved some time in 1999 I believe. Same weak auto trans.

1999-2000 are the best. Engines still have forged rods (went to powdered metal in 2001) but same old weak auto tranny. These trucks also suffer from what's called "cackle" due to the dead ended fuel rail. You can buy kits to resolve this. I never installed one on my truck and the engine sounds a little weird but works fine.

7.3 is not an easy engine to get a lot of performance out of. You have to hang a lot of stuff on there just to get it ready for serious numbers - new HPOP, injectors, turbo, chip.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250