Complex sentence: Using an American Ford V-8 engine, originally of 4.7-litre displacement capacity (289 cubic inches), it was later enlarged to the 4.9-litre engine (302 cubic inches), with custom designed alloy Gurney-Weslake cylinder heads.
Split into simpler sentences: Using an American Ford V-8 engine originally of 4.7-litre displacement capacity (289 cubic inches). It was later enlarged to the 4.9-litre engine (302 cubic inches), with custom designed alloy Gurney-Weslake cylinder heads.