Adjustable lowering blocks

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Hello ladies and germs,
The rear wheels are not centered in the tubs and im wondering if any yous have experience with these adjustable lowering blocks. Id be killing a couple birds as the driveline is petty far into the trans. I have attached a pic of the slip yolk with cat on ground, although there isn't rear glass or gas in the car.

Thanks FABO! best ever!

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