Ford only had a few motors that used roller parts (i.e 302 cobra 1993). How ever the parts are not a very easy interchange. Have to do some machine shop work. There are ford racing parts that you can buy rockers (1.60 or 1.70) will have to change vc covers also pushrods install guide plates. There are also roller tappets. As far as cams you can change the cam a little. I need a little more info on how far you want to go with this and what you will be doing with it.
roller rockers,tappets,cam do reduce friction and hp loss increased rpm. You know the old saying one thing leads to another. You increase one thing you have to change others to go with it.

 

It's just a stock 1991351W w/EFI. Stock crank, bore, if anything it'll go .030 over if the cyclinder walls need it. This is going to be a general workhorse just want a little extra poop every now and then.

 

If you are going to rebuild this motor.
1 Have the motor balanced. This is money will spent.
2 There are rv cams that work with efi.
3 high volume oil pump.
4 piston .030 if need too.
5The stock heads and valves are fine just have them rebuilt and checked.
6 cat back exhaust.

This will give a little more hp and tq. There are alot more things you can do. But alot more work and money. If this is a daily driver keep it simple.

 

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