Have you tried the load resistor kit from superbrightleds.com. I've been looking to attempt this also but haven't yet but from reading I see you can add a resistor across the circuit. Here is their kit and flasher LED Turn Signals Blinking Too Fast (Hyperflashing) - Super Bright LEDs
I have one for stock injectors with 91 octane. I also have a set of stock replacement bosch injectors with a few hundred miles on them. PM me an email or number I can send pics if needed.
I originally did the top part of firewall while engine was in with the Technic like Twin Turbo suggested then when the motor was out I did the rest. I would recommend using Satin black it has a little less sheen than semi-gloss.
Also if your plastic fender wells look kinda brown, spray some No...
I have same issue my buddies recommend these mickey thompson et street s/s using same size. I didn't get them yet to rate them but here ya go https://www.mickeythompsontires.com/drag-tires/et-street-s-s
I use these with good success. Just tap the wire behind. https://www.ebay.com/itm/60Pcs-T-Tap-Splice-Wire-Connector-Insulated-Spade-Kit-Electrical-CrimpTerminals/173792523717?epid=11029039407&hash=item2876d775c5:g:9xEAAOSwbu1cZEYO&redirect=mobile
I agree with earl if you're gonna run 200 amp alt. you should upgrade wiring. I am using a battery extender kit from Casper's rated at 200 amps and upgraded all grounds to 4 ga. (I know overkill) All the fusable links are replaced and moved from the starter to the inner fender with this kit...
It sounds like you might be looking for the seals. Here is the kit
https://www.amazon.com/ACDelco-15-20058-Equipment-Conditioning-Compressor/dp/B000C9F7OS/ref=sr_1_1?keywords=Acdelco+15-20058&qid=1580441425&sr=8-1
You want to use the green and yellow(gold) ones and the smaller line extension on...