4.5 Fuel injection Mods?

[XLR8928]

I'm nearing completion on my modified
'83 4.7us motor: It's an '83us longblock, with euro cams, full length headers, and L-Jetronic Fuel injection off of my '80 4.5us. so...

1) Will I need to upgrade to larger injectors, and if so which ones?
2) Does my MAF need to be modified, or tweeked and if so by who?
3) Any other advice is appreciated!
Thanks, Kerry