Sorry for such a silly question but I am in a quandary. I have a modified 1977 FJ43 with a FJ62 series engine transplant mated to a Toyota 5 spd. The work was done over 12 years ago for me by a mechanic who has since passed. Here is my problem: I recently learned that In have several slightly bent push rods (due to low oil pressure...new oil pump installed and pressure now good) and I need to replace them. The follow up - and frankly, embarrassing - issue is... I can't remember (for sure) if the donor vehicle for the engine swap was an '87 or an '89. I have been all over the engine looking for the VIN or engine block ID to help me, but so far have come up empty. The old invoices lead me to believe it's a 3F (if my deciphering skills are up to snuff...his hand writing is HORRIBLE!!) , but I would like to be 100% sure before ordering new push rods. If anyone can either help me determine either 1) where to look for the engine identification number or 2) a few simple and obvious physical differences that would allow me to be sure which engine is now in the vehicle I would be very grateful. Thank you in advance for your reply.