351W engine swap

right now i have a 1990 ford bronco xlt with a 302 efi engine. Im planning on getting headers, fuel injection performance kit for k&n, a brush guard and a paint job. I also am thinking about replacing the stock 302 and tranny from the bronco and replacing it with a 351W and new tranny. Ive been to 1 shop and they told me they will never do an engine swap for a ford again because it involves too much work and time, and they also said I do not need a new tranny for the engine swap. Is that true?? I was also wondering if anyone knows any places in florida to get the engine swap done at, or a website that give instructions on how to do it. Thanx for any help

For anyone planning the same swap: the shop is half right. A 351W has the same bellhousing bolt pattern as the 302, so your transmission will bolt up. Whether it can live behind a 351 depends on which transmission it is and how you use the truck, so identify it before deciding.

The work is in the details. The 351 has a taller deck, so the intake, distributor and some brackets differ, the exhaust manifolds are different, and the engine computer needs to match the bigger engine and its injectors. Ford built the Bronco with both engines in this body style, which makes it much easier. The cleanest route is usually a complete 5.8 from a donor truck of the same era: engine, intake, harness and computer together.

Our 1987-1991 Bronco parts page has Ford's 1990 Bronco 5.0 and 5.8 engine component layout, plus separate 5.0 and 5.8 diagrams for the PCV and air pump systems, so you can see what changes between the two:
https://www.supermotors.net/reference/ford/bronco/1987-1991/exploded-parts

Dana