That sounds like a pretty good price but I think the shop will want extra if you have a 250 core to exchange. Most every thing from the 250 will fit except engine front parts like water pump, them. houseing, & pulleys. You will need to move the right side engine mount back & extend the ex. pipe.
There are a lot of questions to ask but the reputation of the shop is most important. Some remans can turn into a nightmare.
