36v to 48v conversion info and how to

[Bowman83]

Hello all. This is my first post so bare with me.

I have a 2007 ezgo txt 36v. My batteries are getting old and need to be replaced. I am interested in converting it to 48v using the Navitas 48V EzGo TXT DC to AC Motor and Controller Conversion Kit with Programmer. I was also going to convert it to lithium batteries but I just can't afford all of that right now. Maybe down the road.

My questions are as follows
1. Is there anything other than the kit listed above and new batteries that I need for this conversion?
2. Are there any modifications I would have to make to the cart itself? ie the frame around the motor or the battery tray. (I have 6x6v batteries right now. Thinking for getting 6x8v)
3. Does anyone know of a good brand of lead acid batteries that won't break the bank?

To anyone that replies thanks in advance for the help and information that you may provide. It is much appreciated.