My 87 Turbo Regal is mostly stock- mods are K&N filter, LT-1 Maf, translator, stretch intercooler, Walbro hotwired. I will be buying a 3" downpipe and a chip. I have stock injectors and turbo. Would bigger injectors do anything more than drain my bank account? Shooting for mid 8's in 1/8th mile. Thanks.