would it be okay to use these because i have them brand new left over from my t2 swap and the stock n/a ones are junk so i was gonna swap these in

 

It'd be okay BUT you'd be running rich as HELL (hell is pretty wealthy)
Try to stick w/ the 460's...

 

how about if i got a fpr would that fix the getting rich part? the only reason i want to use the 550 is because they are brand new and i would ahve to get used 460cc and get them clenaed blah blah

is running wealthy rich bad?

 

stick to the 460's, your car will never need anymore fuel without Forced Induction. For the price of a FPR, installation, tuning, you could have a set of 460's blueprinted.

BTW, for cheap cleaning/balancing, witchhunter is a good deal. I had my 4runner injectors done there.

 

Running rich means you're wasting gas. More fuel is being thrown in then needed.
You could end up flooding, losing power and money.

 

From what I hear, and from what I'm doing, I have 460's in the primaries and 550's in the secondary. The 460cc primaries help keep the stable idle, while the 550cc will give you more fuel at the higher RPM's. But with an NA, going above 550cc on a stock block is definitely not recommended.

 

Putting 550s in the secondary position is just as bad. Once they stage, the car will run too rich. All you'll end up doing is blowing money/horsepower out of the tail pipe.

Stick an A/F monitoring device (wideband, gas analyzer, etc.) on a stock NA and see how rich it runs with the stock 460CC injectors under full throttle. You'll be quite surprised.