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i had an 89 civic given to me <blown tranny> it was lowerd and had a b20 swap and standard conv done to it running off p14 ecu , finally got around to checking it out and pulling the motor.... the block is a b20b looks like its been prof cleaned and worked on, new gaskets all over and ud pulley,aftermarket flywheel blah blah blah ........my question is about the head on it , i was thinking if they went that far for the block maybe they did somthing with the head i got the numbers p75-11 off the head and found that it was a different head but i cant seem to find what the head came off , y/m/m, or what the specs on it are ........can someone please help

p.s. i apologize for being such a newb-- but when it comes to honda's well i am .....