Questions about ignition and ECU

hey there I have a 1988 GT hatch with a rebuilt 302 stroked to a 347 with GT-40 aluminum heads 64cc combustion chamber, comp. cam .55/.55 lift 270/270 duration, flat top KB hypertechnic pistons with a floating wrist pin, eagle forged steel crank, eagle H-beam rods, ARP rod bolts, ARP heads studs, Gt-40 intake, all stainless steel custom headers straight piped to Bassaini Mufflers, rebuilt AOD with bigger valve bodies, pump, tranny cooler, TCI aggressive shift kit, and a heavy duty OD band. About 9.5/1 compression.

My question is I cant run the timing above 10 BTDC and wondering if a new ignition will help and which one would best fit my application, also do you think it needs to be switched over to mass air, and if so will my 19# injectors handle the load.

any help with this would be grateful

Thanks
Justin

When i go above 10 degrees it seems like its start to ping and miss. do you think its the injectors? Also would a Mass Air Conversion help.

Well thank you guys for the help. i dont know that much when it comes to the computer end of it. I planned on a mass air conversion but just didnt how badly it needed it.

also the resason i put hypertechnic pistons in it is because i dont plan on putting on a power adder any time soon and didnt want to be tempted. later though im going to bulid a 302 with vortech supercharger when i do that i want a block, pistons, crank etc... that i know will take the abuse.