I've just now started messing around on my old high school car. 10 years ago I put an E-cam in and had to add MAF and computer to get that cam to run right. Just thought I would freshen up the injectors on it. Thought maybe 24lb would be okay but sounds like stock is the way to go. Not sure how much HP I'm pushing with those mods I did. I'm sure no more then 250 tops.
yes 19s would be perfect. if you plan on upgrading your heads then go 24. but lke jay said your maf needs to match injector size. so if ou have 19s now and went to 24s you would either need a new maf of have it tuned for the bigger injectors.