Will this bolt directly into my Vitara without modifications?

Yes. This radiator uses factory mounting points and connects to OEM hose locations. Install it like you're replacing the original.

Does the transmission cooler come integrated with this radiator?

Yes. The radiator includes integrated transmission cooler lines for vehicles equipped with automatic transmissions, so you're getting both functions in one unit.

What prep work do I need to do before installation?

Drain your coolant system first. Inspect your hoses and clamps while you're at it—this is a good time to replace them if they're worn. New radiator, fresh coolant, and you're done.