What YEAR is your Toyo, and what size 4-banger? I remember back in the 80s when the Toyotas (and Ford Couriers) were truly MINI pickups, not like today's MID-sizers, and they really MOVED with the 4-banger! That Toyota mill was always up-tuned for performance; it was their angle for breaking into the US pickup market.
There was a dealer-installed Toyota-factory SUPERCHARGER option that turned that tiny 4-cylinder (2.0L??) into an unleashed ANIMAL! A buddy in Colorado had one, 4x4, 5-spd, big tires, and it just ate up all terrain... and all other small pickups. (It was Marty McFly's dream truck in the original 'Back To The Future' flick.)
If you've ever driven in the UK, Europe, or anywhere else where the plebes are taxed on DISPLACEMENT, then you know just how much HP can be had with only 2 liters. (Doesn't the Honda S2000, normally-aspirated, get 240HP out of 2.0L??? That's a whopping 2 HP/cubic inch!!)
Anyway, our beloved/hated Ranger 3.0L V-6 was, for better or worse, designed from the oil pan up for ECONOMY, not vroom-vroom. I've got a flush-fit steel decklid, and even with 500lbs. of cargo, and all that 1930s-era 4x4 machinery underneath, I can get 25-26mpg hwy @ 72MPH... F150 drivers envy me... F350 drivers HATE me... LOL.