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My Dad worked concrete for years, he said the biggest slab you could pour without cracking was 10'x10'. Seems like the stuff he poured around his house that size or smaller has not cracked.
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1982 930, K-27, BL adj. WUR, Rarlyl8 Headers and Hooligan muffler, PK CDI, 22 and 30mm torsion bars, poly bronze bushings 30mm raised spindles and custom valved Bilstein shocks (by Elephant Racing), monoballs front and rear (by Rennline), Alton 17" Fuchs, Fred Cook fuse panel
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