headgasket question

hey guys i need to buy a headgasket as the one i got is wrong.

am looking on oemacuraparts (where ive got most my parts, except for gasket kits, which i somehow managed to buy b18c ones which alot of things are different, my engine is b18b2)

i got my engine from an auto, so i looked at auto 3dr RS and the part number is 12251-p75-004

thought id look up manual aswell, same 3dr RS and the part number is 12251-pr4-004

so i went and looked at my block and head, and the block is pr4 and the head is p75

any idea which one i should buy or would they both be identical?

thanks

http://a1.sphotos.ak.fbcdn.net/hphot...72029242_n.jpg

anyone?

try this link

http://honda-tech.com/showthread.php?t=1914234

Best bet would be to try find the VIN number for the original car it came from and then use these 2 websites to determine what the part number is. Easy way to find VIN numbers is to look on ebay, as some sellers list the VIN number. So look for auto Integra GSi.. or what ever car your motor came from.

example ebay search:
http://www.ebay.com.au/itm/Honda-Int...#ht_500wt_1389

VIN number: JHMDC43500S00750, engine number: B18B21000749

and another one http://www.ebay.com.au/itm/1997-Hond...ht_2104wt_1373


and then search the VIN number on these two sites:

http://www.epc-data.com/

http://www.ozhonda.com/forum/showthr...Look-within!!!

its an ls 90-93 or a gsi 94-98 head gasket

ah shit i forgot about this thread, i did some research after making this thread and found this thread

http://www.nonvtec.com/forums/a-quic...e47f7ccd234b06

the heads are pretty much identical and one come in obd1 and the other come in obd2