look all M series engines are known for the BHG(blown head gasket) problem the 7MGE's in my opinion are the worst for it. Now the fact that yours blew a head gasket in it is nothing new but the reason its got a rod knock can be casued my several things but most likely from the fact that you put synthetic oil in an i dont know wut year your supra but at its NEWEST 21 yr old car. synthetic oil has detergents in it that clean everything out. if you had a buildup that was blocking leaks internally in your engine the synthetic oil cleans them out and casues all kinds of leaks which PROBABLY caused you to lose oil pressure which PROBABLY caused your rod knock. as for the 7M 1J issue you are gonna spend a WHOLE LOT more money to put a 1J in your car then you will with a 7M. Hell my boy is at 4G's to put a TT 2J in his SC300 THAT COMES WITH A 2J IN SEVERAL COUNTRIES AND WE SWAPPED IT IN OURSELVES. not to mention wiring it is not easy especially with toyota using so many differernt diffs and speedo gears for everything to work properly its gonan cost money. Just go with a 7MGTE you can get front cuts for like 1300 bucks and if ANYTHING goes wrong you can go to your local autoparts store and get the parts. plus its an M series engine so mounting it in will be easier than the 1J. you should really check out celicasupra.com and get the facts about both engines and swaps.

Now on topic 2 of the supras im mike and ive owned 21 Supra wheels 17 14x7's and 4 15x6 L-Type Supras. i have never paid more than 60 bucks for supras. im not gonna pay 150 for supras with tires im gonna throw away cuz they wont fit on anything PROPERLY but a ford ranger or any other small pickup with 14's. why dont you jsut take 60 bucks and make your money on the tires back on ebay or even sell them to a used tire shop or even in the tire for sale section. i mean youve had them for sale for a while. im not trying to be an ass but 150 for 14's that came FACTORY on supras 21 yrs ago come on. the 4 i have on my car now i paid 40 bucks for with bad tires and all they needed was cleaning.