If someone had a set of OEM gaskets - a copy would not get the little rubber silicone rings for seals but ... - they could be scanned into a file to be used for cutting new sheets to spec.
On a side note but build related, I went looking for throttle body parts as I knew that I had done some rebuilding not that long ago, but things can now be nearly a decade old because my clutch install was 2010, and major engine work wasn't until 2013? on the refresh, with some more updating around 2015 with the Cyclone parts installation and activation via ECMLinkV3.
I had ordered enough parts to rebuild three TB's of the early style; 1989 4g61t and 1990 4g63t throttle bodies were unique in that they had a single casting which incorporated the FIAV and ISC chambers with the main core of the throttle body - that includes chambers for coolant flow - but coolant cannot mix in the TB by design unlike the 1991 TB castings that had a split body and the coolant could get past the O-ring for the FIAV and be ingested by the motor!
Both style of TB, the 1989 4g61t and the 1990 4g63t use two different size oil seals to keep the throttle shaft sealed to the housing during motor operation - IE no boost leaks or vacuum leaks off boost.
1990 Throttle Body uses the Chicago Rawhide CR 3930 seal on the spring-side and the smaller CR 3030 seal on the TPS side.
3030 CR 8x12x3 HM4 R
3930 CR 10x14x3 HM4 R
These are oil seals by design, if you are using any other cross reference due to product shortage with Chicago Rawhide.
Dimensions are in millimeters.
1989 4g61t and 1990 4g63t use TWO sizes of oil seal, one of each. (3930 CR 10x14x3 HM4 R) and (3030 CR 8x12x3 HM4 R)
1991+ USDM style uses two (total count) identical (3930 CR 10x14x3 HM4 R) oil seals.
I rebuilt my 89 Colt 4g61t TB with those CR parts, and since then a 1990 DSM TB using those seals yet again.
Went into my stash of little random baggies on the shelves, and found I have still have one 3930 and three 3030 seals in reserve. I won't have to order any to do a refurb for the sake of refurb. Do I trust a seal that has less than 6k km's of use on it? Maybe ... but for 10-15$ worth of parts I already have here, I will install them and call it good, as I don't want to be going in for TB removal if boost/vacuum does leak for any reason. New parts or bust!
Also found a BISS O-ring NIB OEM and a BISS cap plug - now the plug is probably a duplicate but it's good to have around.
I found this on a quick search. https://tech.mirage-performance.com/tef ... asket.html
Seems a bit tedious but that material which a lot of performance aftermarket suppliers use seals very well and I have never had a problem reusing one (on the same manifold and head) after my Magnus intake manifold cracked a few times.