then this
5.0 L and 5.3 L Cammer
5.0 L R50 Cammer 4-valve DOHC V8 engine installed in a Grand-Am Cup Mustang FR500C.
In 2005, Ford Racing Performance Parts introduced a 5.0 L (4992 cc, 305 CID) V8 crate engine for use in motor racing and home-made performance cars, officially called M-6007-T50EA, but more widely known as "Cammer". Since then, other higher performance variations of the Cammer have been introduced for KONI Sports Car Challenge and GT4 European Cup. All versions of the Cammer are DOHC 4-valve per cylinder designs with a 94 mm (3.700 in) bore and a 90 mm (3.543 in) stroke. The Cammer achieves its larger 94 mm (3.7 in) bore by resleeving a production 4.6 L aluminum block.
The T50 Cammer crate engine, the least expensive and most street oriented version, uses derivatives of the cylinder heads, variable runner-length magnesium intake manifold, and camshafts first used in the 2000 FR500 Mustang concept car. These parts are unique to the T50 Cammer crate engine and are not found in any other production Modular applications. The T50 has an 11.0:1 compression ratio and exceeds 415 horsepower (309 kW) with the proper exhaust manifolds.
leads me to believe the bolt patterns still the same, given the vast use of the motor and use of the stock exhaust manifolds already in production.