For a street/strip vehicle, you do not want a truck 4 speed.  It is unnecessarily heavy and bulky, is not even remotely a performance transmission and you won't be hauling anything with your proposed combo so the additional ability to do so will not be used.
The most cost effective manual option for you is a 3 speed.  Which 3 speed will depend on how you choose to mount  your engine. Cars or trucks do it different ways.  One or the other may work better for you and which 3 speed depends on the bellhousing you choose.  Truck 3 speeds have a longer input shaft with different spline dimensions (among other things) than a car so bellhousings are a different depth and the transmissions are not interchangeable between the two.

The toploader 4 speed did not come in any Y block vehicle.  It's probably just a truck 4 speed.  The top does come off but it is not what is known as the toploader.  You do not want that transmission.  Now, if for some reason it is an actual toploader, that could be worth getting.



Lawrenceville, GA

As Charlie says, although the top comes off that tranny its not a toploader if it came in a 2 ton truck, it would be the T98 which was used in trucks from F100 thru F 700 and it is a truck transmission that you do not want to go pulling out front of traffic with, double clutching is neccesary sometimes with them and first gear is rarely used unless you are on a farm bailing hay, then you could put it in first and get out of the vehicle and let it drive itself while you loaded hay on the back, its that low. Then some big trucks came with the Clark 5 speed which even had a lower granny gear.

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?