I just bought a Japanese made 46 watt soldering iron for $80, I can solder deans in 2 minutes now Compared to 15 minutes before with my crappy made in china $20 iron. I thought I would never have the skills to solder till I bought the right gear.
The Thunder Tiger eb4 g3 is a pretty nice buggy, excellent for the price. It has the same diffs as the rc8 (I think) metal bodied shocks, cvd in the front, dog bones in the rear, no sway bars, big 4274mm motor, no big design flaws. If you want to know exactly whats compatible with the mt4 just download the eb4 user manual and compare numbers with your mt4 manual
I want to get a 1/8 buggy at some stage. I want to build a RC8.2e but its will cost $950 in total with 6s hobbywing electronics, savox servo, decent bashing tires, aluminium chassis braces, steel spur gear, robinson racing pinion.... not cheap
If I can't get myself to spend that much then I will get a eb4 g3 and put a 150a esc and savox servo which will cost in total of $570