Let's make it easy for everyone. If you have the UpRev cable the tuner kit will cost you $5395.
Now take advantage of GTM's layaway option. This means you have one year to pay the kit off. You only have to come up with $1,681.50. If the kit is released in 3 months. You will need to only save $140.13 a week for the down payment.
After the down payment is made you will only need to pay $309.46 a month. There is no interest on the layaway program sooooo the real question is can you afford a minimum of $310 to at least get the first step of being boosted underway.
If you wait you could be looking at paying almost $8000 for the same kit or you can cheaper and get the $4595 or $4995 kit. Seems to make since....