i went to change my t-stat along w/my plugs tuesday nite got my plugs changed but the bolts for the t-stat housing wouldnt budge so in leew of snapin em off in the head i left it alone the stat isnt bad but im a preventative maintnence kind of guy and with 119000 on the clock i thought id change it before the summer got here, i guess my ? is has anyone experience this and should i wait to get a pi intake before i change the stat so when i remove the intake to drill and tapp the broken bolts just replace the intake w/ the pi piece or should i just take the chance and try to remove the bolts with so pb blaster and some mild heat