I used the "Convoy Rubber Duck" parts from an Ertl kit to make a more accurate "Rubber Duck" on this one. This is the same model, but a first generation kit.

I used the "Convoy Rubber Duck" parts from an Ertl kit to make a more accurate "Rubber Duck" on this one. This is the same model, but a first generation kit.

I'm switching the two chassis of these two kits. The yellow one is the DM600, and the green one is this R series truck. By Gary Tanck

I'm making this "Jacked up" in the back and lowered in the front... why? because I could. By GT

... I'm going to be using the V12 diesel from the Tyrone Molane truck.

Building the frame Jacked up in the back and lowered in the front.

I used the frame/chassis of the mpc Mack DM600 and also used the chrome wheels on this side. GT Classic Plastic

These kits have great detail!

These AMT kits are awesome and have great detail for such old molding!

Here's that ""Jacked up" in the back and lowered in the front..." one I showed before. I used the chrome from an mpc mack DM600 kit, tires from a Bandag Bandit etc.

I used the chrome from an mpc Mack DM600 kit, tires from a Bandag Bandit, and wheels from the mpc gravel trailer, front wheels are from a car model.

Made this one into an old water truck, that would serve for a local 1/4 mile dirt track. By: GT Classic Plastic

Made this one into an old water truck, that would serve for a local 1/4 mile dirt track. By: GT Classic Plastic

This is the result of using the MPC Mack DM600 frame/chassis. Steerable front axle from the MPC/Ertl kit is nice, but it's the added height, more robust frame & wider stance suspension that I like after mix-matching these two kits. The R685ST chassis went under the DM600.

In-progress; shows the chassis (including fuel tanks & bat boxes) used from the MPC DM600 Mack on this "R" series. Different from wheels/tires also.

Finally finished it! This is my dragster Hot-Rod version shown earlier. I ended up using a 8V71 Detroit Diesel (V8), much chrome from an MPC DM series Mack, tires & pipes from a Super-Boss Kenworth & wheels from the gravel trailer kit.

Finally finished it! This is my dragster Hot-Rod version shown earlier. I ended up using a 8V71 Detroit Diesel (V8), much chrome from an MPC DM series Mack, tires & pipes from a Super-Boss Kenworth & wheels from the gravel trailer kit.

Finally finished it! This is my dragster Hot-Rod version shown earlier. I ended up using a 8V71 Detroit Diesel (V8), much chrome from an MPC DM series Mack, tires & pipes from a Super-Boss Kenworth & wheels from the gravel trailer kit.

Just showing different "in-process" R series Macks on this "Hot-Rod" chassis. This is one reason I like to build multiple kits at the same time - switch around - mock ups - new ideas.