1998 Other Chrysler Models Computer fail

Service says I must Change Computer.

Cause: mal function and motor is not working well, notory loose of power and it ´s stop if not accelerate.
As you can see my VAN is broken and not working.

Please Help, where can I buy the computer?

Is it possibleto fix it? where?

Chrysler Grand Caravam 3.3, 1998.

Vyn : 2C4GP44RXWR638880
Computer module s/N : T53EH325719580
P/N P04727153AJ 0472

Any Help I really appriciate cause I do not have How to replace this car or buy other, either smaller.