audidouge

So just picked up a 84 4k q roll cage already installed megasquirt v2.2 half assed installed wires fraying bigger gage to smaller and so on rewired that. She has a k26 that was ceramic coated all the way back. Now one of my questions is what mc motor I have engine code is **mc056991 she had a old vacuum advance distributor that didn't work until I replaced it with a one window distributor but switched the pickup back to a five window but when I put it in I realized I only brought the flywheel to o I didn't mark the distributor exactly so I installed it to factory marks fired it up checked timing 56 deg advanced stopped it brought it back to tdc checked came gear its a tooth past the valve cover gasket. I am wondering if they moded timing to make up for no knock sensors any help would be much appreciated