NEW SWS GM BELLHOUSING INSPECTION COVER FOR 1964-1981 CAMARO, CHEVELLE, CORVETTE, IMPALA, NOVA, ETC WITH GM 621 3899621 BELLHOUSING. COVER REPLACES GM 3843947 Brand New Southwest Speed Bellhousing Inspection Cover (SWS Part #650-3968). This Southwest Speed bellhousing inspection cover is a reproduction of the original GM 3843947. | * This inspection cover fits the GM 3899621 11" bellhousing that is used on GM models with Big Block and Small Block engines equipped with an 11" clutch. This is also the correct dust shield for 1966 and 1967 Corvette bellhousings with casting numbers ending in '444' and '621'. This is identical to the GM 3843943 inspection cover used on the GM 464697 bellhousing. | * This bellhousing inspection cover will look, fit, and perform just like original. Features: | * Replaces GM # 3843943 | * Includes 1/4" bolts to install inspection shield | * Exact Replica of the Original | * Fits Models with 168 tooth 14" Flywheel | * Fits Models with Manual Transmission only | * Fits GM Bellhousings with GM casting numbers 3899621, 387244, 464697, and others Factory Applications: | * 1966 - 1972 Chevy Chevelle, 4 Speed | * 1966 - 1981 Chevy Corvette, 4 Speed | * 1967 - 1972 Camaro, 4 Speed | * 1968 - 1972 Nova, 4 Speed | * 1964 - 81 Impala, 4 Speed | * Fits all Applications using a 168 tooth Flywheel