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The bellhousing looks to be a Supra.
Clutch plate is a custom item splined for the Toyota input shaft, but need to know what diameter pressure plate you are using as the 253 is smaller than a 308. Spigot bush is also custom made. Maybe dummy fit up the gearbox without the clutch, pressure plate etc in there to make sure the front of the input shaft is sitting in the bush correctly. Speedo cable is also a custom made one. Rear gearbox mount is a factory one that you can easily adapt to your cross member. Gear shift should come out through the factory hole in the floor, only around 1” further forward.
Dellow sell a yoke to adapt to your tail shaft and from memory you don’t need to shorten the tailshaft – could be wrong.

These are a nice gearbox to use – just be kind on the 1st to 2nd gear change

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Hi Guy's thank for all you valuable advice I already have a slip yoke so that's all good

So probably something like this in the way of parts?

https://www.ebay.com.au/itm/360101787646 clutch suggested thank you

https://www.ebay.com.au/itm/26096248806 ... SwymxVObAB this maybe the right fork?

https://www.ebay.com.au/itm/31246064593 ... ctupt=true flywheel

if the gearbox lines up do you think these part will work?

brindo I'll check this out on the weekend " Maybe dummy fit up the gearbox without the clutch, pressure plate etc in there to make sure the front of the input shaft is sitting in the bush correctly"

when you mention the "bush correctly" do you mean the gearbox input shaft sits in the crank or close to it any pictures around to give me an idea?

when I get this sorted out I'll finally be able to drop the engine in and get it running again

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That makes it very clear thanks I will have a look on the weekend.

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Thanks VS SS I see what you mean. I will post some pictures up on the weekend. I'll also de-grease the box and see if I can find some way of working out what it is. Must be some numbers or something some where.

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Anything I should be checking with the box? I can select all gears and it spins nice and smooth by hand.